iTunes has been updated for Airplay and the new iOS 4.2 to be mostly likely released on November 24th. iTunes 10.1 is for both mac and windows users. iTunes 10.1 is safe to use with any jailbroken device. iTunes is 100% compatible with any iOS firmware on any device jailbroken or not. This is just one more clue that iOS 4.2 is just around the corner.